الفهرس 
Chapter I : IntroductionOnly 14 pages are availabe for public view
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Abstract
In this thesis , a microstrip duplexer for the third generation (3G)
Universal Mobile Telecommunication System (UMTS) base station is
investigated. Simple microstrip coupled-lines resonators have been used
to develop the required structure. This satisfies different constraints such
as a high electrical performance level (especially, a very narrow
bandwidth, low insertion loss and a high out-of-band rejection), great
compactness, low cost and a compatibility with a standard planar
integration.
Simulation and optimization processes are carried out with the aid of the
Advanced Design System (ADS) electromagnetic simulator that uses the
full–wave Method of Moment (MoM) numerical technique. Accurate
results are obtained. The losses caused by both the substrate and
metallization are taken into account during the simulation process. The
duplexer is designed, simulated, analyzed, implemented and measured.
During this thesis , a complete design and fabrication procedure of a
one-chip Surface Acoustic Wave (SAW) duplexer is studied this shows
a brilliant challenge for future work .